LibGUI: Make CheckBox height adapt to the current font size

Userland/Libraries/LibGUI/CheckBox.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -16,10 +16,6 @@ REGISTER_WIDGET(GUI, CheckBox)
 
 namespace GUI {
 
-static constexpr int s_box_width = 13;
-static constexpr int s_box_height = 13;
-static constexpr int s_horizontal_padding = 6;
-
 CheckBox::CheckBox(String text)
     : AbstractButton(move(text))
 {
@@ -30,8 +26,34 @@ CheckBox::CheckBox(String text)
         { CheckBoxPosition::Left, "Left" },
         { CheckBoxPosition::Right, "Right" });
 
-    set_min_size({ 22, 22 });
-    set_preferred_size({ SpecialDimension::OpportunisticGrow, 22 });
+    set_min_size(SpecialDimension::Shrink, SpecialDimension::Shrink);
+    set_preferred_size(SpecialDimension::OpportunisticGrow, SpecialDimension::Shrink);
+}
+
+int CheckBox::gap_between_box_and_rect() const
+{
+    return 6;
+}
+
+int CheckBox::horizontal_padding() const
+{
+    return 2;
+}
+
+Gfx::IntRect CheckBox::box_rect() const
+{
+    int box_size = max(13, height() - 10);
+
+    Gfx::IntRect box_rect {
+        0,
+        height() / 2 - box_size / 2 - 1,
+        box_size,
+        box_size,
+    };
+    if (m_checkbox_position == CheckBoxPosition::Right)
+        box_rect.set_right_without_resize(rect().right());
+
+    return box_rect;
 }
 
 void CheckBox::paint_event(PaintEvent& event)
@@ -39,12 +61,13 @@ void CheckBox::paint_event(PaintEvent& event)
     Painter painter(*this);
     painter.add_clip_rect(event.rect());
 
+    auto box_rect = this->box_rect();
     auto text_rect = rect();
     if (m_checkbox_position == CheckBoxPosition::Left)
-        text_rect.set_left(s_box_width + s_horizontal_padding);
+        text_rect.set_left(box_rect.right() + 1 + gap_between_box_and_rect());
     text_rect.set_width(static_cast<int>(ceilf(font().width(text()))));
-    text_rect.set_top(height() / 2 - static_cast<int>(ceilf(font().glyph_height()) / 2));
-    text_rect.set_height(static_cast<int>(ceilf(font().glyph_height())));
+    text_rect.set_top(height() / 2 - static_cast<int>(ceilf(font().pixel_size()) / 2));
+    text_rect.set_height(static_cast<int>(ceilf(font().pixel_size())));
 
     if (fill_with_background_color())
         painter.fill_rect(rect(), palette().window());
@@ -52,13 +75,6 @@ void CheckBox::paint_event(PaintEvent& event)
     if (is_enabled() && is_hovered())
         painter.fill_rect(rect(), palette().hover_highlight());
 
-    Gfx::IntRect box_rect {
-        0, height() / 2 - s_box_height / 2 - 1,
-        s_box_width, s_box_height
-    };
-    if (m_checkbox_position == CheckBoxPosition::Right)
-        box_rect.set_right_without_resize(rect().right());
-
     Gfx::StylePainter::paint_check_box(painter, box_rect, palette(), is_enabled(), is_checked(), is_being_pressed());
 
     paint_text(painter, text_rect, font(), Gfx::TextAlignment::TopLeft);
@@ -85,7 +101,15 @@ void CheckBox::set_autosize(bool autosize)
 
 void CheckBox::size_to_fit()
 {
-    set_fixed_width(s_box_width + static_cast<int>(ceilf(font().width(text()))) + s_horizontal_padding * 2);
+    set_fixed_width(box_rect().width() + gap_between_box_and_rect() + static_cast<int>(ceilf(font().width(text()))) + horizontal_padding() * 2);
+}
+
+Optional<UISize> CheckBox::calculated_min_size() const
+{
+    auto const& font = this->font();
+    int width = box_rect().width();
+    int height = max(22, max(static_cast<int>(ceilf(font.pixel_size())) + 8, box_rect().height()));
+    return UISize(width, height);
 }
 
 }

Userland/Libraries/LibGUI/CheckBox.h

@@ -29,6 +29,8 @@ public:
     CheckBoxPosition checkbox_position() const { return m_checkbox_position; }
     void set_checkbox_position(CheckBoxPosition value) { m_checkbox_position = value; }
 
+    virtual Optional<UISize> calculated_min_size() const override;
+
 protected:
     explicit CheckBox(String = {});
 
@@ -41,6 +43,10 @@ private:
 
     virtual void paint_event(PaintEvent&) override;
 
+    Gfx::IntRect box_rect() const;
+    int gap_between_box_and_rect() const;
+    int horizontal_padding() const;
+
     bool m_autosize { false };
     CheckBoxPosition m_checkbox_position { CheckBoxPosition::Left };
 };